./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4a65477eb93c2031bed3e6d454d38e75e9833f23496d456d5084dd6ae5f38687 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 00:26:09,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 00:26:09,837 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 00:26:09,882 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 00:26:09,884 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 00:26:09,886 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 00:26:09,888 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 00:26:09,891 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 00:26:09,893 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 00:26:09,897 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 00:26:09,898 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 00:26:09,900 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 00:26:09,901 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 00:26:09,902 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 00:26:09,904 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 00:26:09,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 00:26:09,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 00:26:09,912 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 00:26:09,914 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 00:26:09,915 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 00:26:09,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 00:26:09,926 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 00:26:09,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 00:26:09,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 00:26:09,932 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 00:26:09,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 00:26:09,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 00:26:09,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 00:26:09,938 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 00:26:09,938 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 00:26:09,939 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 00:26:09,942 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 00:26:09,943 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 00:26:09,944 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 00:26:09,945 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 00:26:09,945 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 00:26:09,946 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 00:26:09,946 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 00:26:09,947 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 00:26:09,947 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 00:26:09,948 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 00:26:09,950 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 00:26:09,978 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 00:26:09,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 00:26:09,979 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 00:26:09,980 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 00:26:09,980 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 00:26:09,980 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 00:26:09,981 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 00:26:09,981 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 00:26:09,982 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 00:26:09,982 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 00:26:09,983 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 00:26:09,983 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 00:26:09,983 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 00:26:09,983 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 00:26:09,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 00:26:09,984 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 00:26:09,984 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 00:26:09,984 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 00:26:09,984 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 00:26:09,984 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 00:26:09,984 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 00:26:09,985 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 00:26:09,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 00:26:09,985 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 00:26:09,985 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 00:26:09,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:26:09,986 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 00:26:09,986 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 00:26:09,986 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 00:26:09,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 00:26:09,987 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 00:26:09,987 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 00:26:09,987 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 00:26:09,987 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 00:26:09,987 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a65477eb93c2031bed3e6d454d38e75e9833f23496d456d5084dd6ae5f38687 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 00:26:10,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 00:26:10,319 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 00:26:10,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 00:26:10,322 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 00:26:10,324 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 00:26:10,326 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2023-09-01 00:26:11,519 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 00:26:11,763 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 00:26:11,764 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2023-09-01 00:26:11,774 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93f8bd4ea/46a5cfab49ae46b78d97381d46bfa4bd/FLAGddcffb8fb [2023-09-01 00:26:11,787 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93f8bd4ea/46a5cfab49ae46b78d97381d46bfa4bd [2023-09-01 00:26:11,792 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 00:26:11,793 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 00:26:11,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 00:26:11,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 00:26:11,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 00:26:11,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:26:11" (1/1) ... [2023-09-01 00:26:11,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7428ad6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:11, skipping insertion in model container [2023-09-01 00:26:11,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:26:11" (1/1) ... [2023-09-01 00:26:11,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 00:26:11,851 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 00:26:11,975 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i[1107,1120] [2023-09-01 00:26:12,123 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:26:12,137 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 00:26:12,149 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i[1107,1120] [2023-09-01 00:26:12,178 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:26:12,215 INFO L208 MainTranslator]: Completed translation [2023-09-01 00:26:12,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:12 WrapperNode [2023-09-01 00:26:12,215 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 00:26:12,217 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 00:26:12,217 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 00:26:12,217 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 00:26:12,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:12" (1/1) ... [2023-09-01 00:26:12,233 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:12" (1/1) ... [2023-09-01 00:26:12,253 INFO L138 Inliner]: procedures = 165, calls = 24, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 97 [2023-09-01 00:26:12,253 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 00:26:12,254 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 00:26:12,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 00:26:12,254 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 00:26:12,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:12" (1/1) ... [2023-09-01 00:26:12,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:12" (1/1) ... [2023-09-01 00:26:12,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:12" (1/1) ... [2023-09-01 00:26:12,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:12" (1/1) ... [2023-09-01 00:26:12,268 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:12" (1/1) ... [2023-09-01 00:26:12,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:12" (1/1) ... [2023-09-01 00:26:12,273 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:12" (1/1) ... [2023-09-01 00:26:12,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:12" (1/1) ... [2023-09-01 00:26:12,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 00:26:12,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 00:26:12,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 00:26:12,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 00:26:12,277 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:12" (1/1) ... [2023-09-01 00:26:12,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:26:12,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 00:26:12,310 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 00:26:12,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 00:26:12,347 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2023-09-01 00:26:12,348 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2023-09-01 00:26:12,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 00:26:12,348 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 00:26:12,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 00:26:12,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 00:26:12,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 00:26:12,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 00:26:12,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 00:26:12,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 00:26:12,350 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 00:26:12,447 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 00:26:12,449 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 00:26:12,722 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 00:26:12,729 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 00:26:12,729 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-09-01 00:26:12,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:26:12 BoogieIcfgContainer [2023-09-01 00:26:12,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 00:26:12,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 00:26:12,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 00:26:12,735 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 00:26:12,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:26:11" (1/3) ... [2023-09-01 00:26:12,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65cb9c2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:26:12, skipping insertion in model container [2023-09-01 00:26:12,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:12" (2/3) ... [2023-09-01 00:26:12,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65cb9c2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:26:12, skipping insertion in model container [2023-09-01 00:26:12,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:26:12" (3/3) ... [2023-09-01 00:26:12,742 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_69-refine-protected-loop-interval_true.i [2023-09-01 00:26:12,762 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 00:26:12,762 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-09-01 00:26:12,763 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 00:26:12,854 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:26:12,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 111 transitions, 227 flow [2023-09-01 00:26:12,998 INFO L130 PetriNetUnfolder]: 10/110 cut-off events. [2023-09-01 00:26:12,998 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:26:13,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 110 events. 10/110 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 193 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 75. Up to 2 conditions per place. [2023-09-01 00:26:13,005 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 111 transitions, 227 flow [2023-09-01 00:26:13,010 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 110 transitions, 223 flow [2023-09-01 00:26:13,013 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:26:13,032 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 110 transitions, 223 flow [2023-09-01 00:26:13,034 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 110 transitions, 223 flow [2023-09-01 00:26:13,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 110 transitions, 223 flow [2023-09-01 00:26:13,064 INFO L130 PetriNetUnfolder]: 10/110 cut-off events. [2023-09-01 00:26:13,065 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:26:13,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 110 events. 10/110 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 193 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 75. Up to 2 conditions per place. [2023-09-01 00:26:13,067 INFO L119 LiptonReduction]: Number of co-enabled transitions 2728 [2023-09-01 00:26:16,050 INFO L134 LiptonReduction]: Checked pairs total: 4879 [2023-09-01 00:26:16,050 INFO L136 LiptonReduction]: Total number of compositions: 114 [2023-09-01 00:26:16,061 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 00:26:16,066 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1d9edf4e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:26:16,066 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-09-01 00:26:16,068 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-09-01 00:26:16,068 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:26:16,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:26:16,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 00:26:16,069 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2023-09-01 00:26:16,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:26:16,073 INFO L85 PathProgramCache]: Analyzing trace with hash 460, now seen corresponding path program 1 times [2023-09-01 00:26:16,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:26:16,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350416506] [2023-09-01 00:26:16,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:26:16,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:26:16,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:26:16,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:26:16,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 00:26:16,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350416506] [2023-09-01 00:26:16,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350416506] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:26:16,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:26:16,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 00:26:16,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994376467] [2023-09-01 00:26:16,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:26:16,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 00:26:16,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 00:26:16,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 00:26:16,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 00:26:16,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 225 [2023-09-01 00:26:16,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 30 transitions, 63 flow. Second operand has 2 states, 2 states have (on average 102.5) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:16,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:26:16,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 225 [2023-09-01 00:26:16,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:26:16,315 INFO L130 PetriNetUnfolder]: 86/167 cut-off events. [2023-09-01 00:26:16,315 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:26:16,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 167 events. 86/167 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 612 event pairs, 47 based on Foata normal form. 7/120 useless extension candidates. Maximal degree in co-relation 312. Up to 150 conditions per place. [2023-09-01 00:26:16,318 INFO L137 encePairwiseOnDemand]: 221/225 looper letters, 20 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2023-09-01 00:26:16,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 26 transitions, 95 flow [2023-09-01 00:26:16,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 00:26:16,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 00:26:16,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 228 transitions. [2023-09-01 00:26:16,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5066666666666667 [2023-09-01 00:26:16,330 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 228 transitions. [2023-09-01 00:26:16,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 228 transitions. [2023-09-01 00:26:16,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:26:16,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 228 transitions. [2023-09-01 00:26:16,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 114.0) internal successors, (228), 2 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:16,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:16,341 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:16,342 INFO L175 Difference]: Start difference. First operand has 28 places, 30 transitions, 63 flow. Second operand 2 states and 228 transitions. [2023-09-01 00:26:16,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 26 transitions, 95 flow [2023-09-01 00:26:16,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 26 transitions, 94 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 00:26:16,346 INFO L231 Difference]: Finished difference. Result has 25 places, 26 transitions, 54 flow [2023-09-01 00:26:16,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=54, PETRI_PLACES=25, PETRI_TRANSITIONS=26} [2023-09-01 00:26:16,351 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -3 predicate places. [2023-09-01 00:26:16,351 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 26 transitions, 54 flow [2023-09-01 00:26:16,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 102.5) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:16,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:26:16,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 00:26:16,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 00:26:16,352 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2023-09-01 00:26:16,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:26:16,353 INFO L85 PathProgramCache]: Analyzing trace with hash 13988749, now seen corresponding path program 1 times [2023-09-01 00:26:16,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:26:16,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366421196] [2023-09-01 00:26:16,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:26:16,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:26:16,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:26:16,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:26:16,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 00:26:16,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366421196] [2023-09-01 00:26:16,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366421196] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:26:16,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:26:16,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 00:26:16,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580461218] [2023-09-01 00:26:16,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:26:16,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:26:16,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 00:26:16,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:26:16,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:26:16,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 225 [2023-09-01 00:26:16,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 26 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:16,569 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:26:16,569 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 225 [2023-09-01 00:26:16,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:26:16,634 INFO L130 PetriNetUnfolder]: 75/145 cut-off events. [2023-09-01 00:26:16,635 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:26:16,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 145 events. 75/145 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 515 event pairs, 31 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 276. Up to 109 conditions per place. [2023-09-01 00:26:16,640 INFO L137 encePairwiseOnDemand]: 222/225 looper letters, 27 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2023-09-01 00:26:16,640 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 35 transitions, 130 flow [2023-09-01 00:26:16,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:26:16,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:26:16,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 324 transitions. [2023-09-01 00:26:16,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48 [2023-09-01 00:26:16,646 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 324 transitions. [2023-09-01 00:26:16,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 324 transitions. [2023-09-01 00:26:16,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:26:16,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 324 transitions. [2023-09-01 00:26:16,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:16,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:16,653 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:16,653 INFO L175 Difference]: Start difference. First operand has 25 places, 26 transitions, 54 flow. Second operand 3 states and 324 transitions. [2023-09-01 00:26:16,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 35 transitions, 130 flow [2023-09-01 00:26:16,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 35 transitions, 130 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 00:26:16,655 INFO L231 Difference]: Finished difference. Result has 26 places, 25 transitions, 56 flow [2023-09-01 00:26:16,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=26, PETRI_TRANSITIONS=25} [2023-09-01 00:26:16,656 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -2 predicate places. [2023-09-01 00:26:16,656 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 25 transitions, 56 flow [2023-09-01 00:26:16,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:16,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:26:16,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 00:26:16,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 00:26:16,658 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2023-09-01 00:26:16,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:26:16,661 INFO L85 PathProgramCache]: Analyzing trace with hash 555227508, now seen corresponding path program 1 times [2023-09-01 00:26:16,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:26:16,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987562828] [2023-09-01 00:26:16,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:26:16,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:26:16,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:26:16,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:26:16,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 00:26:16,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987562828] [2023-09-01 00:26:16,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987562828] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:26:16,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:26:16,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 00:26:16,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987217786] [2023-09-01 00:26:16,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:26:16,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:26:16,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 00:26:16,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:26:16,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:26:16,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 225 [2023-09-01 00:26:16,837 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:16,838 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:26:16,838 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 225 [2023-09-01 00:26:16,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:26:16,888 INFO L130 PetriNetUnfolder]: 95/184 cut-off events. [2023-09-01 00:26:16,889 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-09-01 00:26:16,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 184 events. 95/184 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 573 event pairs, 44 based on Foata normal form. 7/162 useless extension candidates. Maximal degree in co-relation 367. Up to 139 conditions per place. [2023-09-01 00:26:16,890 INFO L137 encePairwiseOnDemand]: 219/225 looper letters, 25 selfloop transitions, 3 changer transitions 1/33 dead transitions. [2023-09-01 00:26:16,890 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 33 transitions, 132 flow [2023-09-01 00:26:16,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:26:16,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:26:16,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 317 transitions. [2023-09-01 00:26:16,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696296296296296 [2023-09-01 00:26:16,893 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 317 transitions. [2023-09-01 00:26:16,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 317 transitions. [2023-09-01 00:26:16,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:26:16,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 317 transitions. [2023-09-01 00:26:16,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:16,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:16,897 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:16,897 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 56 flow. Second operand 3 states and 317 transitions. [2023-09-01 00:26:16,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 33 transitions, 132 flow [2023-09-01 00:26:16,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 33 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 00:26:16,898 INFO L231 Difference]: Finished difference. Result has 28 places, 27 transitions, 78 flow [2023-09-01 00:26:16,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=28, PETRI_TRANSITIONS=27} [2023-09-01 00:26:16,899 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 0 predicate places. [2023-09-01 00:26:16,899 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 27 transitions, 78 flow [2023-09-01 00:26:16,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:16,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:26:16,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:26:16,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 00:26:16,900 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2023-09-01 00:26:16,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:26:16,901 INFO L85 PathProgramCache]: Analyzing trace with hash 388357468, now seen corresponding path program 1 times [2023-09-01 00:26:16,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:26:16,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102559915] [2023-09-01 00:26:16,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:26:16,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:26:16,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:26:16,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:26:16,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 00:26:16,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102559915] [2023-09-01 00:26:16,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102559915] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:26:16,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:26:16,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 00:26:16,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241837315] [2023-09-01 00:26:16,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:26:16,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:26:16,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 00:26:16,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:26:16,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:26:16,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 225 [2023-09-01 00:26:16,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 27 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:16,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:26:16,986 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 225 [2023-09-01 00:26:16,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:26:17,020 INFO L130 PetriNetUnfolder]: 23/71 cut-off events. [2023-09-01 00:26:17,020 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-09-01 00:26:17,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 71 events. 23/71 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 147 event pairs, 1 based on Foata normal form. 8/72 useless extension candidates. Maximal degree in co-relation 147. Up to 41 conditions per place. [2023-09-01 00:26:17,021 INFO L137 encePairwiseOnDemand]: 219/225 looper letters, 13 selfloop transitions, 6 changer transitions 3/29 dead transitions. [2023-09-01 00:26:17,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 29 transitions, 126 flow [2023-09-01 00:26:17,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:26:17,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:26:17,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 308 transitions. [2023-09-01 00:26:17,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4562962962962963 [2023-09-01 00:26:17,023 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 308 transitions. [2023-09-01 00:26:17,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 308 transitions. [2023-09-01 00:26:17,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:26:17,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 308 transitions. [2023-09-01 00:26:17,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:17,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:17,026 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:17,026 INFO L175 Difference]: Start difference. First operand has 28 places, 27 transitions, 78 flow. Second operand 3 states and 308 transitions. [2023-09-01 00:26:17,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 29 transitions, 126 flow [2023-09-01 00:26:17,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 29 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 00:26:17,028 INFO L231 Difference]: Finished difference. Result has 28 places, 25 transitions, 76 flow [2023-09-01 00:26:17,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=28, PETRI_TRANSITIONS=25} [2023-09-01 00:26:17,029 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 0 predicate places. [2023-09-01 00:26:17,029 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 25 transitions, 76 flow [2023-09-01 00:26:17,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:17,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:26:17,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:26:17,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 00:26:17,030 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2023-09-01 00:26:17,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:26:17,030 INFO L85 PathProgramCache]: Analyzing trace with hash 198709175, now seen corresponding path program 1 times [2023-09-01 00:26:17,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:26:17,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395360347] [2023-09-01 00:26:17,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:26:17,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:26:17,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:26:17,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:26:17,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 00:26:17,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395360347] [2023-09-01 00:26:17,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395360347] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:26:17,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:26:17,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 00:26:17,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144780324] [2023-09-01 00:26:17,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:26:17,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 00:26:17,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 00:26:17,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 00:26:17,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 00:26:17,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 225 [2023-09-01 00:26:17,111 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 25 transitions, 76 flow. Second operand has 5 states, 5 states have (on average 92.2) internal successors, (461), 5 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:17,111 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:26:17,111 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 225 [2023-09-01 00:26:17,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:26:17,187 INFO L130 PetriNetUnfolder]: 26/85 cut-off events. [2023-09-01 00:26:17,187 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-09-01 00:26:17,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 85 events. 26/85 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 175 event pairs, 12 based on Foata normal form. 2/85 useless extension candidates. Maximal degree in co-relation 208. Up to 34 conditions per place. [2023-09-01 00:26:17,188 INFO L137 encePairwiseOnDemand]: 216/225 looper letters, 25 selfloop transitions, 8 changer transitions 3/38 dead transitions. [2023-09-01 00:26:17,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 38 transitions, 188 flow [2023-09-01 00:26:17,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 00:26:17,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 00:26:17,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 578 transitions. [2023-09-01 00:26:17,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42814814814814817 [2023-09-01 00:26:17,190 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 578 transitions. [2023-09-01 00:26:17,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 578 transitions. [2023-09-01 00:26:17,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:26:17,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 578 transitions. [2023-09-01 00:26:17,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 96.33333333333333) internal successors, (578), 6 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:17,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 225.0) internal successors, (1575), 7 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:17,195 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 225.0) internal successors, (1575), 7 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:17,195 INFO L175 Difference]: Start difference. First operand has 28 places, 25 transitions, 76 flow. Second operand 6 states and 578 transitions. [2023-09-01 00:26:17,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 38 transitions, 188 flow [2023-09-01 00:26:17,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 38 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 00:26:17,197 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 124 flow [2023-09-01 00:26:17,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=124, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2023-09-01 00:26:17,198 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 7 predicate places. [2023-09-01 00:26:17,198 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 124 flow [2023-09-01 00:26:17,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.2) internal successors, (461), 5 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:17,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:26:17,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:26:17,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 00:26:17,199 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2023-09-01 00:26:17,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:26:17,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1865017516, now seen corresponding path program 1 times [2023-09-01 00:26:17,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:26:17,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272590011] [2023-09-01 00:26:17,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:26:17,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:26:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:26:17,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:26:17,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 00:26:17,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272590011] [2023-09-01 00:26:17,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272590011] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:26:17,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:26:17,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 00:26:17,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922660657] [2023-09-01 00:26:17,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:26:17,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 00:26:17,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 00:26:17,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 00:26:17,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 00:26:17,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 225 [2023-09-01 00:26:17,292 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:17,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:26:17,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 225 [2023-09-01 00:26:17,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:26:17,360 INFO L130 PetriNetUnfolder]: 31/100 cut-off events. [2023-09-01 00:26:17,360 INFO L131 PetriNetUnfolder]: For 76/76 co-relation queries the response was YES. [2023-09-01 00:26:17,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 100 events. 31/100 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 236 event pairs, 6 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 273. Up to 30 conditions per place. [2023-09-01 00:26:17,361 INFO L137 encePairwiseOnDemand]: 218/225 looper letters, 35 selfloop transitions, 12 changer transitions 0/52 dead transitions. [2023-09-01 00:26:17,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 52 transitions, 322 flow [2023-09-01 00:26:17,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 00:26:17,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 00:26:17,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 508 transitions. [2023-09-01 00:26:17,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45155555555555554 [2023-09-01 00:26:17,364 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 508 transitions. [2023-09-01 00:26:17,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 508 transitions. [2023-09-01 00:26:17,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:26:17,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 508 transitions. [2023-09-01 00:26:17,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 101.6) internal successors, (508), 5 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:17,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 225.0) internal successors, (1350), 6 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:17,368 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 225.0) internal successors, (1350), 6 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:17,368 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 124 flow. Second operand 5 states and 508 transitions. [2023-09-01 00:26:17,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 52 transitions, 322 flow [2023-09-01 00:26:17,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 52 transitions, 320 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 00:26:17,370 INFO L231 Difference]: Finished difference. Result has 39 places, 35 transitions, 216 flow [2023-09-01 00:26:17,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=216, PETRI_PLACES=39, PETRI_TRANSITIONS=35} [2023-09-01 00:26:17,371 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 11 predicate places. [2023-09-01 00:26:17,371 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 35 transitions, 216 flow [2023-09-01 00:26:17,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:17,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:26:17,372 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:26:17,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 00:26:17,372 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2023-09-01 00:26:17,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:26:17,373 INFO L85 PathProgramCache]: Analyzing trace with hash -813432129, now seen corresponding path program 2 times [2023-09-01 00:26:17,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:26:17,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186538776] [2023-09-01 00:26:17,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:26:17,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:26:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:26:17,459 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:26:17,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 00:26:17,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186538776] [2023-09-01 00:26:17,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186538776] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 00:26:17,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961291962] [2023-09-01 00:26:17,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 00:26:17,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 00:26:17,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 00:26:17,465 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 00:26:17,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 00:26:17,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 00:26:17,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 00:26:17,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 00:26:17,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:26:17,666 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:26:17,666 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:26:17,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961291962] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:26:17,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 00:26:17,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2023-09-01 00:26:17,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881123102] [2023-09-01 00:26:17,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:26:17,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 00:26:17,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 00:26:17,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 00:26:17,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-09-01 00:26:17,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 225 [2023-09-01 00:26:17,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 216 flow. Second operand has 7 states, 7 states have (on average 92.28571428571429) internal successors, (646), 7 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:17,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:26:17,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 225 [2023-09-01 00:26:17,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:26:17,864 INFO L130 PetriNetUnfolder]: 40/128 cut-off events. [2023-09-01 00:26:17,864 INFO L131 PetriNetUnfolder]: For 188/188 co-relation queries the response was YES. [2023-09-01 00:26:17,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 410 conditions, 128 events. 40/128 cut-off events. For 188/188 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 330 event pairs, 17 based on Foata normal form. 4/132 useless extension candidates. Maximal degree in co-relation 399. Up to 52 conditions per place. [2023-09-01 00:26:17,865 INFO L137 encePairwiseOnDemand]: 217/225 looper letters, 39 selfloop transitions, 13 changer transitions 3/57 dead transitions. [2023-09-01 00:26:17,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 57 transitions, 410 flow [2023-09-01 00:26:17,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 00:26:17,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 00:26:17,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 858 transitions. [2023-09-01 00:26:17,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4237037037037037 [2023-09-01 00:26:17,867 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 858 transitions. [2023-09-01 00:26:17,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 858 transitions. [2023-09-01 00:26:17,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:26:17,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 858 transitions. [2023-09-01 00:26:17,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 95.33333333333333) internal successors, (858), 9 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:17,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 225.0) internal successors, (2250), 10 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:17,872 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 225.0) internal successors, (2250), 10 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:17,872 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 216 flow. Second operand 9 states and 858 transitions. [2023-09-01 00:26:17,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 57 transitions, 410 flow [2023-09-01 00:26:17,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 57 transitions, 410 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 00:26:17,876 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 298 flow [2023-09-01 00:26:17,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=298, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2023-09-01 00:26:17,889 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 22 predicate places. [2023-09-01 00:26:17,889 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 298 flow [2023-09-01 00:26:17,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 92.28571428571429) internal successors, (646), 7 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:17,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:26:17,890 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:26:17,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-09-01 00:26:18,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 00:26:18,091 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting workerErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2023-09-01 00:26:18,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:26:18,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1400357945, now seen corresponding path program 1 times [2023-09-01 00:26:18,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:26:18,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951312248] [2023-09-01 00:26:18,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:26:18,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:26:18,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:26:18,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:26:18,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 00:26:18,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951312248] [2023-09-01 00:26:18,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951312248] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:26:18,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:26:18,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 00:26:18,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187776527] [2023-09-01 00:26:18,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:26:18,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 00:26:18,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 00:26:18,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 00:26:18,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-09-01 00:26:18,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 225 [2023-09-01 00:26:18,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 298 flow. Second operand has 6 states, 6 states have (on average 92.83333333333333) internal successors, (557), 6 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:18,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:26:18,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 225 [2023-09-01 00:26:18,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:26:18,297 INFO L130 PetriNetUnfolder]: 47/144 cut-off events. [2023-09-01 00:26:18,297 INFO L131 PetriNetUnfolder]: For 345/345 co-relation queries the response was YES. [2023-09-01 00:26:18,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 509 conditions, 144 events. 47/144 cut-off events. For 345/345 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 366 event pairs, 16 based on Foata normal form. 2/146 useless extension candidates. Maximal degree in co-relation 495. Up to 55 conditions per place. [2023-09-01 00:26:18,298 INFO L137 encePairwiseOnDemand]: 217/225 looper letters, 28 selfloop transitions, 18 changer transitions 7/58 dead transitions. [2023-09-01 00:26:18,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 58 transitions, 481 flow [2023-09-01 00:26:18,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 00:26:18,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 00:26:18,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 582 transitions. [2023-09-01 00:26:18,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4311111111111111 [2023-09-01 00:26:18,301 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 582 transitions. [2023-09-01 00:26:18,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 582 transitions. [2023-09-01 00:26:18,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:26:18,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 582 transitions. [2023-09-01 00:26:18,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 97.0) internal successors, (582), 6 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:18,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 225.0) internal successors, (1575), 7 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:18,305 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 225.0) internal successors, (1575), 7 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:18,305 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 298 flow. Second operand 6 states and 582 transitions. [2023-09-01 00:26:18,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 58 transitions, 481 flow [2023-09-01 00:26:18,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 58 transitions, 461 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-09-01 00:26:18,309 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 360 flow [2023-09-01 00:26:18,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=360, PETRI_PLACES=53, PETRI_TRANSITIONS=43} [2023-09-01 00:26:18,310 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 25 predicate places. [2023-09-01 00:26:18,310 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 360 flow [2023-09-01 00:26:18,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.83333333333333) internal successors, (557), 6 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:18,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:26:18,311 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:26:18,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 00:26:18,312 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting workerErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2023-09-01 00:26:18,312 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:26:18,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1440498827, now seen corresponding path program 2 times [2023-09-01 00:26:18,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:26:18,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478075896] [2023-09-01 00:26:18,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:26:18,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:26:18,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:26:18,391 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:26:18,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 00:26:18,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478075896] [2023-09-01 00:26:18,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478075896] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:26:18,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:26:18,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 00:26:18,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515856618] [2023-09-01 00:26:18,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:26:18,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 00:26:18,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 00:26:18,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 00:26:18,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 00:26:18,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 225 [2023-09-01 00:26:18,427 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 360 flow. Second operand has 6 states, 6 states have (on average 90.83333333333333) internal successors, (545), 6 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:18,427 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:26:18,427 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 225 [2023-09-01 00:26:18,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:26:18,502 INFO L130 PetriNetUnfolder]: 44/135 cut-off events. [2023-09-01 00:26:18,503 INFO L131 PetriNetUnfolder]: For 420/420 co-relation queries the response was YES. [2023-09-01 00:26:18,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 513 conditions, 135 events. 44/135 cut-off events. For 420/420 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 337 event pairs, 19 based on Foata normal form. 2/137 useless extension candidates. Maximal degree in co-relation 497. Up to 83 conditions per place. [2023-09-01 00:26:18,504 INFO L137 encePairwiseOnDemand]: 216/225 looper letters, 0 selfloop transitions, 0 changer transitions 48/48 dead transitions. [2023-09-01 00:26:18,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 48 transitions, 461 flow [2023-09-01 00:26:18,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 00:26:18,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 00:26:18,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 638 transitions. [2023-09-01 00:26:18,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050793650793651 [2023-09-01 00:26:18,507 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 638 transitions. [2023-09-01 00:26:18,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 638 transitions. [2023-09-01 00:26:18,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:26:18,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 638 transitions. [2023-09-01 00:26:18,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.14285714285714) internal successors, (638), 7 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:18,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 225.0) internal successors, (1800), 8 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:18,513 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 225.0) internal successors, (1800), 8 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:18,513 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 360 flow. Second operand 7 states and 638 transitions. [2023-09-01 00:26:18,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 48 transitions, 461 flow [2023-09-01 00:26:18,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 48 transitions, 432 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-09-01 00:26:18,516 INFO L231 Difference]: Finished difference. Result has 54 places, 0 transitions, 0 flow [2023-09-01 00:26:18,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=54, PETRI_TRANSITIONS=0} [2023-09-01 00:26:18,518 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 26 predicate places. [2023-09-01 00:26:18,518 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 0 transitions, 0 flow [2023-09-01 00:26:18,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 90.83333333333333) internal successors, (545), 6 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:18,521 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 8 remaining) [2023-09-01 00:26:18,521 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-09-01 00:26:18,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (5 of 8 remaining) [2023-09-01 00:26:18,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 8 remaining) [2023-09-01 00:26:18,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 8 remaining) [2023-09-01 00:26:18,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2023-09-01 00:26:18,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 8 remaining) [2023-09-01 00:26:18,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2023-09-01 00:26:18,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 00:26:18,523 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2023-09-01 00:26:18,527 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 00:26:18,527 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 00:26:18,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 12:26:18 BasicIcfg [2023-09-01 00:26:18,530 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 00:26:18,531 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 00:26:18,531 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 00:26:18,531 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 00:26:18,531 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:26:12" (3/4) ... [2023-09-01 00:26:18,533 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 00:26:18,539 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure worker [2023-09-01 00:26:18,542 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-09-01 00:26:18,542 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-09-01 00:26:18,542 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-09-01 00:26:18,542 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 00:26:18,571 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 00:26:18,571 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 00:26:18,571 INFO L158 Benchmark]: Toolchain (without parser) took 6778.68ms. Allocated memory was 83.9MB in the beginning and 121.6MB in the end (delta: 37.7MB). Free memory was 58.2MB in the beginning and 72.4MB in the end (delta: -14.2MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. [2023-09-01 00:26:18,572 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 60.8MB. Free memory is still 38.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 00:26:18,572 INFO L158 Benchmark]: CACSL2BoogieTranslator took 422.02ms. Allocated memory is still 83.9MB. Free memory was 58.2MB in the beginning and 59.1MB in the end (delta: -955.8kB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. [2023-09-01 00:26:18,572 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.79ms. Allocated memory is still 83.9MB. Free memory was 59.1MB in the beginning and 57.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 00:26:18,572 INFO L158 Benchmark]: Boogie Preprocessor took 22.07ms. Allocated memory is still 83.9MB. Free memory was 57.0MB in the beginning and 55.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 00:26:18,572 INFO L158 Benchmark]: RCFGBuilder took 454.34ms. Allocated memory is still 83.9MB. Free memory was 55.1MB in the beginning and 40.8MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-09-01 00:26:18,573 INFO L158 Benchmark]: TraceAbstraction took 5798.00ms. Allocated memory was 83.9MB in the beginning and 121.6MB in the end (delta: 37.7MB). Free memory was 40.4MB in the beginning and 74.5MB in the end (delta: -34.1MB). Peak memory consumption was 3.5MB. Max. memory is 16.1GB. [2023-09-01 00:26:18,573 INFO L158 Benchmark]: Witness Printer took 40.17ms. Allocated memory is still 121.6MB. Free memory was 74.5MB in the beginning and 72.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 00:26:18,574 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 60.8MB. Free memory is still 38.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 422.02ms. Allocated memory is still 83.9MB. Free memory was 58.2MB in the beginning and 59.1MB in the end (delta: -955.8kB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.79ms. Allocated memory is still 83.9MB. Free memory was 59.1MB in the beginning and 57.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.07ms. Allocated memory is still 83.9MB. Free memory was 57.0MB in the beginning and 55.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 454.34ms. Allocated memory is still 83.9MB. Free memory was 55.1MB in the beginning and 40.8MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5798.00ms. Allocated memory was 83.9MB in the beginning and 121.6MB in the end (delta: 37.7MB). Free memory was 40.4MB in the beginning and 74.5MB in the end (delta: -34.1MB). Peak memory consumption was 3.5MB. Max. memory is 16.1GB. * Witness Printer took 40.17ms. Allocated memory is still 121.6MB. Free memory was 74.5MB in the beginning and 72.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.0s, 104 PlacesBefore, 28 PlacesAfterwards, 110 TransitionsBefore, 30 TransitionsAfterwards, 2728 CoEnabledTransitionPairs, 6 FixpointIterations, 43 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 23 ConcurrentYvCompositions, 4 ChoiceCompositions, 114 TotalNumberOfCompositions, 4879 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3598, independent: 3425, independent conditional: 0, independent unconditional: 3425, dependent: 173, dependent conditional: 0, dependent unconditional: 173, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1544, independent: 1508, independent conditional: 0, independent unconditional: 1508, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3598, independent: 1917, independent conditional: 0, independent unconditional: 1917, dependent: 137, dependent conditional: 0, dependent unconditional: 137, unknown: 1544, unknown conditional: 0, unknown unconditional: 1544] , Statistics on independence cache: Total cache size (in pairs): 121, Positive cache size: 106, Positive conditional cache size: 0, Positive unconditional cache size: 106, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 739]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 141 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.6s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 410 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 275 mSDsluCounter, 99 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 57 mSDsCounter, 53 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 836 IncrementalHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 53 mSolverCounterUnsat, 42 mSDtfsCounter, 836 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=360occurred in iteration=8, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 295 SizeOfPredicates, 4 NumberOfNonLiveVariables, 152 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 15/19 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 00:26:18,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE